Though there were no illegal drugs found in Amy's system, her father suspects that the anti-anxiety drug Librium, which is used to treat withdrawal symptoms during detox from alcohol, might have been a factor in her death. He told Cooper that his daughter had seizures, brought on my alcohol withdrawal but had been improving before her sudden death.

"The periods of abstinence were becoming longer, and the periods of drinking were becoming shorter," Mitch told Cooper, the Associated Press reports.